/* ============================================================
   Vingroup — Premium corporate theme (demo by vPage.vn)
   ============================================================ */
:root{
  --c:#ff8a5c;--c2:#ffa07a;--navy:#0c1f3a;--navy2:#13315c;--ink:#16243c;
  --muted:#5a6b85;--line:#e7edf5;--bg:#f6f9fd;--bg2:#eef3fb;
  --r:16px;--rl:26px;--maxw:1200px;
  --sh-xs:0 1px 2px rgba(12,31,58,.05);--sh:0 16px 40px rgba(12,31,58,.10);
  --sh-lg:0 30px 70px rgba(12,31,58,.18);--glow:0 14px 34px rgba(255,138,92,.35);
  --ff:"Be Vietnam Pro",system-ui,sans-serif;--fh:"Playfair Display",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:var(--ff);color:var(--ink);line-height:1.75;background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{text-decoration:none;color:inherit}ul{list-style:none}
h1,h2,h3{font-family:var(--fh);line-height:1.12;letter-spacing:-.01em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.bg{background:linear-gradient(180deg,var(--bg),var(--bg2))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--c);margin-bottom:16px}
.head{text-align:center;max-width:660px;margin:0 auto 60px}
.head h2{font-size:clamp(28px,4vw,44px);color:var(--ink);margin-bottom:14px}
.head p{color:var(--muted);font-size:17px}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;padding:14px 30px;border-radius:12px;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}
.btn-primary{background:linear-gradient(135deg,var(--c),var(--c2));color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(255,138,92,.5)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--navy)}.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh)}
/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
/* header */
.header{position:sticky;top:0;z-index:100;backdrop-filter:saturate(160%) blur(14px);background:rgba(12,31,58,.82);transition:background .3s,box-shadow .3s}
.header.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.25)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--fh);font-weight:700;font-size:23px;color:#fff;letter-spacing:.5px}
.brand .dot{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c),var(--c2));display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:var(--glow)}
.menu{display:flex;align-items:center;gap:30px}
.menu a{color:rgba(255,255,255,.85);font-weight:500;font-size:15px;transition:color .2s}
.menu a:hover{color:var(--c2)}
.nav-r{display:flex;align-items:center;gap:14px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px}
@media(max-width:900px){.menu{display:none;position:absolute;top:74px;left:0;right:0;flex-direction:column;background:var(--navy);padding:16px 24px;gap:0}.menu.open{display:flex}.menu a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.08)}.burger{display:flex}.nav-r .btn{display:none}}
/* hero */
.hero{position:relative;background:linear-gradient(125deg,var(--navy),var(--navy2));color:#fff;overflow:hidden;padding:104px 0 120px}
.hero::before{content:"";position:absolute;width:620px;height:620px;border-radius:50%;right:-160px;top:-200px;background:radial-gradient(circle,rgba(255,138,92,.32),transparent 62%)}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:54px 54px;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 70% 0,#000 30%,transparent 72%);mask-image:radial-gradient(ellipse 70% 60% at 70% 0,#000 30%,transparent 72%)}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero h1{font-size:clamp(36px,6vw,64px);margin-bottom:22px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--c),var(--c2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:19px;color:rgba(255,255,255,.82);margin-bottom:34px;max-width:580px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:-60px;position:relative;z-index:5}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;text-align:center;box-shadow:var(--sh)}
.stat b{font-family:var(--fh);font-size:38px;color:var(--navy);display:block;line-height:1}
.stat span{font-size:14px;color:var(--muted);margin-top:6px;display:block}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr);margin-top:-44px}}
/* cards */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
@media(max-width:900px){.grid3{grid-template-columns:1fr}}
.sector{position:relative;border-radius:var(--rl);overflow:hidden;min-height:300px;display:flex;align-items:flex-end;color:#fff;box-shadow:var(--sh)}
.sector img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s}
.sector:hover img{transform:scale(1.08)}
.sector::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 28%,rgba(10,24,46,.9))}
.sector .t{position:relative;z-index:2;padding:28px}
.sector .t h3{font-size:23px;margin-bottom:6px}.sector .t span{font-size:14.5px;opacity:.85}
/* about */
.about{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
@media(max-width:900px){.about{grid-template-columns:1fr}}
.about-media{position:relative;border-radius:var(--rl);overflow:hidden;box-shadow:var(--sh-lg);aspect-ratio:4/3.4}
.about-media img{width:100%;height:100%;object-fit:cover}
.about h2{font-size:clamp(28px,4vw,42px);margin-bottom:20px}
.about p{color:var(--muted);margin-bottom:16px;font-size:16.5px}
.values{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.values span{font-weight:600;font-size:14px;background:var(--bg);border:1px solid var(--line);color:var(--navy);padding:9px 16px;border-radius:999px}
/* testimonials */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.testi-grid{grid-template-columns:1fr}}
.testi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;box-shadow:var(--sh-xs)}
.testi .stars{color:#f5a623;margin-bottom:12px;letter-spacing:2px}
.testi p{color:var(--ink);margin-bottom:18px}
.testi .who{display:flex;align-items:center;gap:12px}
.testi .av{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;display:grid;place-items:center;font-weight:700}
.testi .who b{display:block;font-size:15px}.testi .who small{color:var(--muted)}
/* CTA */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(125deg,var(--navy),var(--navy2));border-radius:var(--rl);padding:64px 40px;text-align:center;color:#fff;box-shadow:var(--sh-lg)}
.cta-band::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;left:-120px;bottom:-200px;background:radial-gradient(circle,rgba(255,138,92,.3),transparent 60%)}
.cta-band h2{position:relative;font-size:clamp(28px,4vw,42px);margin-bottom:14px;color:#fff}
.cta-band p{position:relative;opacity:.85;font-size:18px;margin-bottom:28px}
/* footer */
.footer{background:#0a182e;color:#9fb2cc;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer h4{color:#fff;font-family:var(--fh);font-size:19px;margin-bottom:16px}
.footer a{color:#9fb2cc;display:block;margin-bottom:10px;transition:color .2s}.footer a:hover{color:var(--c2)}
.footer .soc{display:flex;gap:10px;margin-top:8px}
.footer .soc a{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.07);display:grid;place-items:center;color:#fff}
.footer .soc a:hover{background:linear-gradient(135deg,var(--c),var(--c2))}
.footer-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:14px;color:#6f86a3}
/* vPage badge + cta */
.vpage-badge{position:fixed;bottom:18px;left:18px;background:#fff;border:1px solid #eee;border-radius:999px;padding:8px 14px;font-size:12px;color:var(--muted);box-shadow:var(--sh);z-index:90}.vpage-badge b{color:var(--c)}
.vpage-cta{position:fixed;bottom:18px;right:18px;z-index:90;background:linear-gradient(135deg,#5b4cf0,#0bb5d6);color:#fff;font-weight:700;font-size:14px;padding:12px 20px;border-radius:999px;box-shadow:0 12px 28px rgba(91,76,240,.4);transition:transform .2s}.vpage-cta:hover{transform:translateY(-2px)}
@media(max-width:560px){.vpage-badge{display:none}.vpage-cta{bottom:14px;right:14px;font-size:13px;padding:10px 16px}}